Grating-machine



(No Model.)

P. W. DROSTEN.

GRATING MACHINE.

No. 351,100. Pated Oct. 19, 1886.

I E 1 I AtES'/ T avel 12601 UNITE STATES ATENT OFFICE.

FREDERICK \V. DROSTEN, OF ST. LOUIS, MISSOURI.

GRATlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 351,100, dated October19, 1886. Application filed February 8, 1856. Serial No. 191,232. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, FREDERICK W. DROS- TEN, a citizen of the UnitedStates, residing at the city of St. Louis, in the State of Missouri,have invented a new and useful Fruit, Vegetable, and Nut Gratin gMachine, of which the following is a specification.

My invention relates to improvements in fruit, vegetable, and nutgraters or gratingmachines which operate with a rotating metal disk ordrum, having a raised or grater surface which cuts off small particlesof the kernel or substance intended to be grated and allows it to passthrough it intoa vessel provided to receive it, and the object of myinvention is to provide a continuous bearing of the matter to be reducedwhile in the hopper in course of being grated against the revolvinggrating disk or surface, and thus insuring its speedy and completetrituration and reduction to any desired consistency, which maybedetermined by the size and shape of the openings and raisedcutting-surface of the revolving disk or surface. I attain these objectsby the mechanism illustrated in the accompanying drawings, in which-Figure 1 is an elevation of my machine, having a portion of the frontbroken off so as to show the interior parts in place. Fig. 2 is avertical section through the center of the machine on line 2 of Fig. 1.Fig. 3 is a cross-see tion ofthe upper part of Fig. 1 on line 3 thereof,looking from below, and showing the position of the obliquebearing-flanges on the in side of the hopper or receiver. Fig. 4 is adetail showing the annular grating-disk. Fig. 5 is a detail of theannular grating-disk, showing the raised cuttingbdges. Fig. 6 is anotherdetail View of the annular cutting or grating disk, showing the gratingedges and orifices enlarged.

Similar letters refer to similar parts through out the several views.

The body A of the grater is round,and made of tin, sheet-iron, brass, orother suitable material, having its middle conc-shaped or in clinedinwardly and terminating in a neck and dish-shaped top or mouth, and isopen at the bottom.

A metal bridge, A, Fig. 2, provided with a fixed hollow metal shank a inwhich the central connecting vertical rod or shaft,B, is j ournalcd,spans the top or upper part of the body.

The central shaft or rod, 13, Fig. 2, is square at the top, or so as toengage the arm or crank D, by which the grater isoperated, and isprovided with a shoulder or rest, 1), bearing on the hollow shank a,through which the rod passes and engages the annular gratingdisk O inthe middle'at 0 Fig. 2, where the rod is made square, or so as to have abearing for and engage and hold the disk firmly by the nut and washersC" and O that work on the threaded lower end of the rod.

The grating-disk 0, Figs. 4 and 6, is niade round and fits snug enoughto move freely between the inside walls of the body of the grater A. Theforms of the cuts and edges that do the grating may be round, oval,oblong, or square, or all of these, and similar forms may be providedwith each grater, and may be put in or taken out with little trouble atthe will of the operator.

The flanges E, Fig. 3, aremade of tin or other sheet metal cut intotriangular shape and soldcred or otherwise fastened at one side thereofto the sloping inner walls of the body of the grater, and projectingdownwardly therefrom in an oblique direction toward the diameterof thebody of the grater at an angle of about forty-five degrees, where itrests and is fastened to one end of the braces or supports E. Thesupports E arealso made of sheet metal, and are soldered to the inclinedinside walls of the body of the grater at one end and to the flanges Eat the other, and thus support the said flanges at the angle of theirslope from the body downward, the same being on'aline with the motion ofthe disk 0, as indicated by the dotted lines and arrows, Figs. 1, 2, 4,and 6. The front surface of these flanges engages the material to begrated at an angle as soon as the disk 0 is set in motion, and preventsthe same from escaping until the whole is brought in contact with thegrating-surface of the disk and reduced, the flanges passing directlyover the grating-surface just enough to free the points on the disk.

It is obvious that the parts or whole of the foregoing machine may bemade larger or smaller as occasion may require, and may be operated bysteam or hand power in any of the well-known means of giving motion to acentral shaft; but the chief object which I seek is to provide a utensilready at hand for the housekeepers use in grating any of the things re-5 quired and adapted for being reduced in a family grater. 7

Among the advantages of my improved. grater may be mentioned itssimplicity of construction and operation and readiness of taking 10apart for the purposes of cleaning or inserting different forms ofgrating-surface disks suited to the different kinds of Work desired.

Having thus described my apparatus, What v by Letters Patent, is-

I claim as my invention, and desire to secure The combination, in agrater, of the body A, having downwardly-inclined prismoidal flanges EE,bridge A", shalft B, grater-disk C, and means for securing said disk tothe shaft, substantially as described, and for the purposes 20 setforth.

FREDERICK W. DROSTEN.

Attest:

EDWARD J. OBRIEN, W. M. HEZEL.

